Hoisting-machine.



PATENTED JAN. 1, 1907.

A.'.E.HANDY.

HOISTING MACHINE.

APPLICATION FILED MAR.27, 1906.

m n .1 m v Q m a... 7 M B f a w witnesses Q I a0 64 2. '2?

UNITED/ STATES PATENT -o FIon.

Aernua i nwian HAN-DY, on Pnovmnnon, 'RHODEYIS'L'AND, ASSIGNOB To RHODE'ISLAND ELEYATORAND MACHINE COMPANY, OF PROVI- I DE NCE, .RHQDEISLAND,CORPORATION or RHonn ISLAND.

' holsri'uemAoi-lins.

" specification of Letters Patent-.

Patented J an. 1, 1907.

Applioation filed March27,il906. Seriallfhts .3031252- To o/ll whom itma concern."

san it known that I, ARTHUR EDwARt' HANDY, a citizen of the UnitedStates, re-

siding at the cityof Providence, in the county of Providence and Stateof Rhode Island,-

have invented certain new and useful 1111-. proveinents inHoisting-Machines, of which the following is a specification, referencebeing had therein tothe accompanying drawln s.

" lhis invention relates to hoisting-machines, and has for its objectthe construction of a machine for'hoisting, saidmachi'ne being providedwith an eccentrically-mounted drum arranged to be moved-at the will ofthe operator by'nieans of an operating-lever either to be rotated byengagement with a set of rotating driving-rolls or'moved into engagementwith a set of brake-shoes to hold said drum from turning.

A further object of the invention is that this drum shall be driventhrough suitable gears and friction-rolls by an electric motor,

. also that the motor shallstart slowly and then increase its speedgradually by cutting out resistance step by stop all by theniovement'ofone operating-lever.

Another feature of the invention is that a permanent wire connection ismade. and maintained from the last plate of the rheostat to thepivot-point of the contact-arm for the purpose of assisting the saidcontact-arm in conducting the initial current when in its normalposition. This permanent wire connection also renders it impossible toget an poor contact of *invention consists of certain novel features of'5: To 1 in section.

for-adjustment. Fig. 5 is a diagram view construction, as will be morefully described,

and particularly pointed out in the appended claiins.

' In the accompanying drawings, Figure l is a pla n view of thehoisting-machine. Fig. 2 is a side elevation of the same, illustratingrollarm, illustrating the supported portion illustrating the wiringarrangements for the hoisting device. I

Referring to the drawings, at I is the frame of the machine, that may bemade in any convenient form. At 2 is the drum-shat t journaled ineccentric blocks 3 3, that are mounted to be turned in bearings in eachside-of said'frame. The two friction-wheels 4 4 are bolted or otherwisesecurely fastened one to each side of the winding-drum 5, and then thewhole three are mounted on the shaft 2,

to be moved together longitudinally in the I frameby the turning of theeccentric blocks,-

as hereinafter described.

The brake-shoes 6 6 are fixed to the rod 7,

and. thus held in a position to bev engaged b.

the friction-wheels 4 4 when they are set bac 'by the movement of theeccentrics 3 3, and

the ends of the said rod 7 are mounted to be longitudinally, adjusted inslots in the side frames.

1 The driving friction-rolls 8 are mountedon and fixed to shaft 9, whichis journaled in each frame. 'This-shaft 9 is driven by theelectriemotorlO through the pinion 11 and gear 12. I

Mounted on and fixed to eachof the eccentrics 3 3 on either side of themachine is a frame 15, each of which extends out rearwardly from thecenter of the eccentric, form ing an car '16, to which theoperating-lever is pivoted at 17. The frame then extends upward for ashortdistanceona line-forward of the center of the eccentric, and atits'u er end is formed a cap 18 down through who a set-screw 19 isthreaded. A shelf or bracket 20 extends outward from the lower portionof this frame beneath the operating-lever to form a rest or stop forsaid lever to rest on. At 21 is astiff coil-spring that is su ported onthe said operating-lever through '0 e shoe 22 and receives its tensionagainst the same by the adjusting-screw 19 through the me: dium of itsupper late 23, against which said screw rests. l lie operating-lever 13is formed in a U shape, with its ends extendin around to either side ofthe machine 'an'c pivotally connected at 17, as above stated, slightlyin the rear of the center of the eccentric blocks 3 3, and the loop ofthe lever extends around in front of the machine, andt'o its frontportion is attached the operatingcord 14. The spring 21 described andthe chine, the action of which springs are hereinafter described. On theforward end of the machine-frame is fixed the startingswitch, that iscomposed of two spring-- pressed fingers 24- 24, pivotally mounted at 25on the slate base-plate 26. Connectedto the-operating-lever 13 in aposition to engage the said starting-switch fingers 24 is the connectingroll bar' 27, the detail of which is shown in Fig. 3, which bar is forthe purpose of making the connection between the two fingers to completethe circuit to the motor. Thls rollbar (see Fig. 3) is constructed of ashell 36- of conducting material mounted to turni're'ely on a core 27 ofnon-conducting material, both of which are secured to the plate 38 bythe bolt 39, said'plate being slotted at 40, near its lower end, toprovide for vertical adjustment on the operatingle er. c 4

On the side of the machine frame is mounted the rheostat 28, throughwhich the.

resistance to the motor may be cut out step by step by means of themovement of the contact-arm 29, that is pivoted at 30 to the frame. Thiscontact-arm is connected to the operating-lever through the connections31, 32, and 33. This latter connection is pivoted at 34 to the saidoperating-lever at a point directly over the center of the eccentricblock 3, so that by the first movement of the said lever to rotate thisblock and start the motor-there will be no movement of, the

contact-arm to out out resistance.

Another feature of this construction is the wire connection 50, leadingi'rom-the pivoting-point of the rhe'ostat-arm to the last plate 51 inthe rheostat. Thiswire is made a permanent connection between these twopoints and serves to assist in conducting the initial current 'when therheostat-arm is in its normal position. This connection also renders itimpossible to get an'open circuit by reason of apoor contact being madeby the said rheostat-arm' while in any'position on the rheostat.

The ordinarilyconstructed electricallyoperated hoistin machines of theclass described are usual y arranged to startv the load,

at the full speed of the motor, thereby bringing an undue strain on boththe motor and .the rest of the machinery. To obviate the lever, t

quick starting of the machine, I have arranged to send the current tothe motor through a rheostat, and after-the motor has started to hoistthe load the resistance is cut out ste by step by raising the operatinghreby starting the motor slowly and maximum speed. a

. When it is desired to start the machine, the

first thing to be done is to close the cut-out I switch 41 (see Fig. 5,)and then by raisingthe operating-lever 13 the connecting-har 27 'engagesboth of the fingers 24 24 and completes the circuit to the solenoid 44,which is thus energized to raise and close the main switch 43. Thecurrent by this action is then allowed to pass by the way of the wire 52through the Iheostat 28, arm 29, wires 45 and 46 to the motor 10, whichis at oncestarted" 1 slowly. Atthe same time the friction-wheels, 4 4are brought forward by a continued up-t ward movement of the lever 13until they engage the driving friction-rolls 8 8, when the drum 5commences to turn, and slowly hoist the load from the motor,'the currentpassing through the series field 47 and wire 48 out'through the mainswitch 43 and cutout 41.

On account of the permanent connection of theirame 15 to the eccentricblocks 3 the first upward motion of the. lever ivoted thereon instead ofcompressing t e stifl springs 21-natur'ally acts to rotate the blocks,

and thus move the frictiomwheels 4 4 from the friction-shoesto engagethe driving friction-rolls 8 8, by which said wheels are started torotate. The movement of this operat- -ing:lever either up or down solong as the springs 21 arenotcompressed do not affect the rheostat arm.As before stated, the first upward movement of this lever starts themotor, connects the drum thereto through its friction-wheels, 'and'the'load is started slowly to be lifted. Afnrther upward movement of thesaid lever then com resses the springs 21, sets the friction-whee sharder against the driving-rolls,and also through the connections 33,32, and 31'. causes the rheostat+arm 29 to rise and cutout theresistance step by step, thus causing the motor to speed up gradual yuntil the maximumspeed is reached.

When it is desired tojstop the machine, the reverse action takes place.The resistance is first'cut in again to gradually slow down the motor,then the friction-wheels are carried over" against the brake-shoes tohold the load, after which the motor is stopped,

and the whole is'being' done by the movementof but one lever. By theabove arrangements the motor is called into action only when it isdesired to hoist the load and is at all other times entirelydisconnected from the drum by the movement of the eccentrics.

The motor is also-disconnected from theelectric'current by thewithdrawing of the connectin -bar 27 as soon as thedrum engages and-iseldbythe friction brake-shoes.

This machine by its practical construction is rendered extremely simpleand efi'ective in its operation. I

Having thus described my invention, What I claim as new, and desire tosecure by Let-- ters Patent, is' Y 1. In a hoisting-machine, a drum,frictionrolls for driving said drum, a motor for actuating saidrolls,'an actuating-lever, means including said lever by the movement ofwhich said drum is operatively connected tovsaid rolls and said motorand drum may be startedz'slowly and speed.

2. In a hoisting-machine, a drum, fixed friction-shoes, rotatabledriving means,- means for moving said drum whereby-it will be releasedfrom said, shoes to be engaged and rotated by said drivii g means, amotor for rotating said driving means, an operating-lever, and meanswhereby the movement of said lever shall start the motor, cause thedrum. to rotate and subsequently accelerate the speed of the motor.

3. ,In a hoisting-machine, a drum, fixed friction-shoes, rotatabledriving means, means for moving saiddrum whereby it will be releasedfrom said shoes to be engaged and rotated by said driving means, anelectric subsequently accelerated in motor for rotating said drivingmeans, a rheostat placed in-the electric circuit, an operating-lever,and means whereby the movement of said lever in one direction shallfirst start the motor then. releasethedrum from the brake-shoe to berotated by saidmot'or and subsequently accelerate the speed of saidmotor and drum by cutting out the resistancein' the rheostat.

4. In a hoisting-machine, a drum, fixed" frictionshoes, rotatabledriving means, means formoving said drum whereby it ,will be releasedfrom said shoes to be engaged and rotated by said drivin means, anelectric motor for rotating said riving means, arheo stat placed in theelectric circuit, an operating-lever, and means whereby the movement ofsaid lever in one direction willfirstcause the'motorto start and thenmove the drum to be rotated by the driving means, and means for cuttingout the resistance in the rheostat increase its speed.

step by step to cause said motor to gradually 5. In a hoisting-machine,a drum, fixed friction-shoes, rotatable driving means, means for movingsaid drum whereby it will be released from said shoes to be engaged androtated by said driving means, an electricmotor for rotating saiddriving means, a rheostat placed in the electric circuit, anoperating-lever, means actuated by. said lever for.

completing the circuit to start the mo tor, and. means connected to saidlever whereby the rheostat-arm will be actuated to cut out theresistance step by step after the current has been completed to startthe motor and the drum connected thereto. a

6. In a hoisting-machine, a drum mounted in eccentrics, fixedfriction-shoes, rotatable driving means, means for. moving'said drumwhereby it will be released from said shoes to be engaged and rotated bysaid driving means, an electric motor for rotating said driving means, arheostat laced in the electric cir cuit, an operatingever pivotallyconnected to said'eccentrics, a yieldable connection also continue torise after said eccentrics have engagement with said driving means, andmeans whereby the continued upward movement of said lever cuts out theresistance in the rheostat to speed u the motor.

7. Ina hoisting-mac in eccentrics, fixed friction-shoes, rotatable tatedby said driving means, an electricinotor for rotating said drivingmeans, a rheostat placed in the electric circuit, a frame connected toeach eccentric, an operatingthe rear of the eccentric centers, springsin said frames resting on said lever whereby said lever is allowed tocontinue to rise after said eccentrics have been turned to bring thedrum into-rotatable engagement with said driving means, and meanswhereby thecontinned upward movement of said lever cuts out theresistance in the rheostat tospeed up the motor.

in eccentrics, fixed friction-shoes, rotatable tric, an operating-leverpivotally connected centers, springs in said frame resting on said leverforward of said eccentric centers, a condirectly over the center of theeccentric when said lever is in its normal position, whereby the firstraising of said lever starts the motor and rotates said eccentric, and afurther-u ward movement of said lever compresses t e spring, and raisessaid rheostat-arm to cut out the resistance step by step.

9. In a hoisting-machine, a drum mounted in eccentrics, fixedfriction-shoes, rotatable driving means, means for moving said drumwhereby it will be released from said shoes to be engaged and rotated bysaid driving means, an electric motor for rotating said driving means, arheostat placed in the elecconnection in said rheostat to assist saidarm in carrying the current, an operating-lever, and means whereby themovement of said lever in one direction will first cause the motor tostart and then move the drum to be rotated by the driving means, andmeans for cutting out the resistance in the rheostat step by step tocause said motor to gradually increase its s eed.

10. In a oisting machine, a hoistin drum, friction-Wheels eccentricallymounteil, frictiondriving-rolls arranged toengage the on saidleverwhereby the same is allowed to lever pivotally connected to saidframes 1n 8. In a hoisting-machine; a drum mounted a 9 driving means,means for moving said drum to said frames in the rear of theeccentrictric circuit, a rheostat-arm, a permanent wire" been turned tobring said drum into rotatable e, a drummounted driving means, means tobe engaged and ro- 95 tric circuit, a frame connected to each eccen- KOO'nection to said rheostat pivoted to said lever -,periphery of saidwheels, means including an operating-lever and said eccentrics to movesaid fr ction-wheels into and out of engage- 7 "merit w'vi-t-h sa iddriving-rolls and said friction- ";shoes, 'a;nd n1ea1rs whereby onemovement of said leverwill start the motor, connect thednvnig-drunrthereto and subsequently acio tion of a 01 1 fcntri'callynOu-n'ted, friction holding-shoes cele'ra't'e the speed of'the motor. I"1 111- 111- '*hoisting machine, the combina- 's'ting'-'dru1n,'friction-wheels ecerial-aged: -to -e1j1ga ethe periphery of said--wheelsgfriction-"drivin rolls also arranged .o en'gage-the peripheryof said wheels, means neat-the drum thereto and subsequently cut "ibuttlieresistancc from the rlreostat step by step ,t o"'-"increasethe speedof the motor.

'1'23In;a"hoisting machine, a drum, fixed -fr'icti'o1'I-shoes, meansincluding friction defilivei'y rol'lsfor rotatin'g said drum, meanswhereby, said drum may be moved to be engaged-and rotatedby saidrotating means and also moved to engage and be held by the saidfriction-' shoe's, a driving motor and nej'ans fors'tarting'a'ndstopping said motor (gag ed and rotated by said rotating means and alsomoved to'engage'and be held by the saidfriction--shoe's,- meal-1's including friction de- ,livery rolls/fiorrotating said drum, means I"whereby saiddruln'may be moved to be enin presence of two witnesses.

' "friction-shoes, and means whereby the hoistlug-drum m'ay becaused tostart the load :Slo'wlyfand be graduallyincreased to its maxif mumspeed, and means whereby said drum and load may be caused to stopgradually,

14. In a hoisting-machine, a drum, fixed friction -shoes, rotatabledriving means, means formoving said drum wherebyitwill be released fromsaid shoes to be engaged and rotated'b'y said driving means, "a motorfor rotating said driving means, an operatinglever, means wherebyanupward movement of said lever shall start the motor, cause the drum torotate and subsequently accelerate the speed of the motor, and meanswhereby when said lever is returned the speed of the motor is firstreduced, the drum detached from the rotary means to beheld by said shoesand finally the motor stopped.

15.' In a hoisting-machine, a drum fixed friction shoes, rotatabledriving means, means for moving said drum whereby it will be releasedfrom said shoes to be enga ed and rotated by said driving means, an eectric motor for rotating said driving means, rheostat placed in theelectric circuit, an operating-lever, means whereby the movement of said'lever in one direction shall first start the motor then release thedrum from the brake-shoe to be rotated by said motor and .subsequentlyaccelerate the speed of said motor and drum by cutting out theresistance in the rheostat, and means whereby the return movement ofsaid lever shall first cut the resistance into the rheostat'to reducethe speed of the motor then return the drum from the a driving means toengage said shoes and finally stop the motor. a

In testimony whereof- I affix my signature ARTHUR EDWARD HANDY.Witnesses:

I-IowARn E. BARLOW, v E. I. OGDEN.

